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module Faye
class StaticServer
def initialize(directory, path_regex)
@directory = directory
@path_regex = path_regex
@path_map = {}
@index = {}
end
def map(request_path, filename)
@path_map[request_path] = filename
end
def =~(pathname)
@path_regex =~ pathname
end
def call(env)
filename = File.basename(env['PATH_INFO'])
filename = @path_map[filename] || filename
cache = @index[filename] ||= {}
fullpath = File.join(@directory, filename)
begin
cache[:content] ||= File.read(fullpath)
cache[:digest] ||= Digest::SHA1.hexdigest(cache[:content])
cache[:mtime] ||= File.mtime(fullpath)
rescue
return [404, {}, []]
end
type = /\.js$/ =~ fullpath ? RackAdapter::TYPE_SCRIPT : RackAdapter::TYPE_JSON
ims = env['HTTP_IF_MODIFIED_SINCE']
no_content_length = env[RackAdapter::HTTP_X_NO_CONTENT_LENGTH]
headers = {
'ETag' => cache[:digest],
'Last-Modified' => cache[:mtime].httpdate
}
if env['HTTP_IF_NONE_MATCH'] == cache[:digest]
[304, headers, ['']]
elsif ims and cache[:mtime] <= Time.httpdate(ims)
[304, headers, ['']]
else
headers['Content-Length'] = cache[:content].bytesize.to_s unless no_content_length
headers.update(type)
[200, headers, [cache[:content]]]
end
end
end
end
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